7
TRISONIC
TM
SCANNING MODULE
This module is utilized to receive air-borne ultrasound such as
the ultrasounds emitted by pressure leaks and electrical
discharges. There are three prongs at the rear of the module. For
placement, align the prongs with the three corresponding jacks
in the front end of the metered pistol housing and plug in.
TO USE THE TRISONIC
TM
SCANNING MODULE
Plug in to front end.
Select the LOG position on the meter selection dial.
For general use position the frequency selection dial to the "fixed-band" mode.
Start with the sensitivity selection dial at maximum (10).
Start to scan the test area.
The method of air borne detection is to go from the "gross to the fine". If there is too much
ultrasound in the area, reduce the sensitivity, place the RUBBER FOCUSING PROBE (described
below) over the scanning module and proceed to follow the test sound to its' loudest point
constantly reducing the sensitivity and following the meter.
CONTACT (STETHOSCOPE) MODULE
This is the module with the metal rod. This rod is utilized as a "waveguide" in that it is sensitive to
ultrasound that is generated internally such as within a pipe, bearing housing, steam trap or wall.
Once stimulated by ultrasound, it transfers the signal to a piezoelectric transducer located directly
in the module housing. This module is shielded to provide protection from stray RF waves that
tend to effect electronic receiving. It is
equipped with low noise amplification to
allow for a clear, intelligible signal to be
received and interpreted.
